Solution : https://service.sap.com/sap/support/notes/944478 (SAP Service marketplace login required)
Key words :
'basic data' tab page, 'tax' tab page, field ttxd-xtxit, tax-relevant lines, 'calculate tax' indicator, calculate tax reason, tax amount, tax amounts, transaction miro, company code
Related Notes :
| 856749 | FB60: Displaying calculated taxable value on tax tab page |
| 842156 | Miro with tax detail screen SAPLTAX1 451 |